Mechanical movement.



A. & F. WIDMER.

MECHANICAL MOVEMENT.

APPLlcATloN FILED FEB. 5. 191s.

Patented Feb. 4., 1919.

2 SHEETS-SHEETI lli 3l y) 5) Patented Feb. 4, 1919.

2 SHEETS-SHEET 2 lll.

A. & F. WIDMER. MECHANICAL MOVMENT.

APPLICATION FILED rss. 5. 19.18.

:mls run-rs om. umn-umn. wunmarau c pecication of Letters Patent.

Patented Feb. 4, 1919.

Application filed February 5, 1918. Serial No. 215,487.

To all whom t may concern." Y

Beit known that we, ADoLr WIDMER and FRITZ WIDMER, citizens of the Swiss Confederation, and residing at Schnenwerd, Switzerland, have invented certain new and useful Improvements in Mechanical Movements, of which the following is a specification.

The present invention has reference to improvements in machines for whipping eggs, cream, mayonnaise, dough, and the like, and relates more particularly to a machine of this character in which there is imparted to Y the whipping member or members a lateral swlnging movement as well as an up and down movement, in close imitation ofthe movements the hand of an operator natu'- rally goes through in beating up such substances.

Our invention will best be understood when described in connection with the accompanying drawings, in which Figure 1 shows a side elevation, and Fig. 2 a front elevation of a preferred form of construction of our improved whipper; Figs. 3 and 4 represent respectively side and front elevations of a modied construction, and Figs. 5-8 show constructional details.

In the construction illustrated by Figs. 1 and 2 the main machine upright l journals in its foot portion the one end of the horizontal shaft 2, whose other end is journaled in the floor bearingl. On this shaft 2 rides idly the pulley 5, and two rigidly connected pulleys 3, 4 are keyed on this shaft and are driven in any suitable manner, by hand, foot, or machine power, preferably by an electromotor. By means of the belt 6 the rotary movement of pulley 3 is transmitted to a pulley 8 fixed on the one end of the shaft 7 which is journaled in the uprivht 1, parallel to the lower pulley shaft 2. t the other end of this shaft 7 is rigidly secured an eccentric sheave 9 and is surrounded by the strap 10 (Figs. l, 2 and 8), into whose oppositely disposed sockets 10 are respectively fiXed the rods. 11, 11. The former rod 1l is operatively guided in the guide and bearing sleeve 12 which is fulcrumed by means of the laterally extending trunnion j 12 (Fig. 7) to a clamp member 14 adjustably secured on the upright 1. A cross-pin, coperating with a circumferential groove 13 in the trunnion 12, prevents inadvertent loosening of the parts. The upper end of the other rod 11 is pivotally connected to a lever rod 15, the other end of which is rigidly attached to a rock shaft 16. In the guide-bar arrangement 17, located at the upper end of the upright, reciprocates vertlcally the slide block 18, which is provided with laterally extending bosses 18 for journaling the shaft 16.

On the shaft 16, close to the lever rod 15, 1s secured a coupling sleeve 16, in which a shaft 16 is secured in extension of the shaft 16. In order to prevent oil, whichis used for lubricating the shaft 16 in the slide block 18, 18, from spreading along the shaft, there is pinned to this shaft 16 the oil guard 18 (Figs. 2 and 5). Helical springs 19 surrounding the guide rods 17 tend to always force the slide block upwardly, for the purpose of counterbalancing the parts and assuring their shockless operation. At the free ends of the shafts 16, 16 are provided supporting members 16 of semicircular cross-section (Figs. 2 and 6) in. which t-he shafts 20 of the whipping members 20 are securely retained by the aid of yokes 24 having each a set screw 24.

We have shown, by way Yof example, a cage-like construction of whipping member, but it is obvious that they could also be of any other suitable construction; thus, for instance, they could be provided with helically twisted wire members in place of the straight rods 20 illustrated. On the ma- Vchine upright is vertically adjustable the double-armed support 23, the outer end sockets 23 of which carry the frames 22 for supporting the bowls 21 in which the stirrers 20 operate.

The described mechanisms impart to the whipping members a two-fold operative movement, one in up and down direction, and another in laterally swinging direction, which, as is well known, is the best complex movement for elTectively beating up substances, such as eggs or cream, or the like.

For altering the lateral oscillator.T movements of the whipping member within its bowl, the Ijournal sleeve 12, which guides the lower strap rod 11, is shifted relative to the upright, whereby the distance between the eccentric center and the fulcrum for the rod 11 is altered, so thatkthe upper end of the upper strap rod 11, jointed to the lever rod 15, is carried through a respectivelyv larger or smaller radius of rotation.

In the modification illustrated by the Figs. 3 and 4 there is provided a crank mech the eccentric arrangement above described.

ries the loose pulley 5 and the fixed'pulleys` 3, 4J, and it is vertically adjustable on the upright l. By means of the belt 6 the pulley 8 on the shaft 7 is rotated. From the pulley 8 extends outwardly a crank pin 9 to which is operatively securedv the crank rod 10 intermediate its extremities, so that a double-'armedlever is formed. The lower free end of the longer crank rod arm is guided inthe ljournal sleeve 12, which is pivoted to the machine upright lwith the possibility of lateral swing movement, as described above in connection with Fig. T. The upper shorter crank rod arm is articulated to the lever rod 15 fixed to the shaft 16. The other parts of this modified construction are identical to those above described, With the exception that we haw` shown here only one bowl Z1 and whipping memberV 20; Vbut We could, obv'iloiisly, also provide for such double arrangement, without interfering `With the general construction and function of the various parts and the inventive principle involved.

What We claim is l. In a mechanism of the class described, the 'combination of a standard, guides mounted on the standard, a slide mounted in the guides, va rock shaft mounted in the guide, an operated member connected to the rock shaft, an arm extending fromthe rock shaft, an eccentric mounted on the standard, a lever operated by the eccentric and piv- Copies of this pate'nt may be obtained for otally connected at one end to the arm, and a guide for the opposite end of the lever, and means'for rotating` the eccentric, Whereby the shaft Will be simultaneously rocked and reciprooated.

2. In mechanism of the class described, the combination of a standard, a pair of guides supported on the standard, a slide mounted to reciprocate on the pair of guides, buffer s rings on the guides below theslide, a rock sialft mounted in the slide', an eccentric mounted on the standard, an operating connection between the eccentric and the rock shaft, an operated element Acz-rried by one end of the rock shaft, and meansfor operating the cam to cause the shaft to reciprocate and rock the shaft and theoperated element carried thereby.

3. In kmechanism of the class described, the combination of a standard, guides supported thereon, a slide mounted on the guides, an operatedI element carried at each end of the shaft, means for adjustably mounting the operating elements, an' eccentric mounted on the shaft, a lever ope-rated bythe eccentric, Aan' arm vrextending from the shaft and `pivotally connected Ito the upper end of the lever, a pivotally mounted guide for the lower end of the lever, and means for' operating the eccentric whereby the operated elements are simultaneously reciprocated and rocked.

AD OLF WIDMER FRITZ WIDMER.

five cents each, by adressing'the Gonmissi'oner ofP'ateilts.

"tllaslfiington,l D. C. 

